I am the proud owner of a new 19 gen 4. I wanted to ask if there is much difference in regaurds to the new spring design as it relates to recoil and getting back on target quicker than the previous Gen 3. I have never shot a 9mm. I usually shoot my glock 21 and 30 in 45 acp. I do a good deal of shooting in bowling pin matches and I am looking forward to joining in on the 9mm class.